Valve-grinder.



' W. E. TURNER.

VALVE GRINDER.

APPLICATIONHLED JUNE I3. 1916- 1,217,669- Patented Feb. 27, 1917.

State of Washington,

are used, and my 55 4, said "in sinus PATEN on c.

WILLIAM ELMER TURNER, on TOPPENISI-I, WASHINGTON.

vALvNGnINDEn.

Application filed June 13, 1916. $eria1 No. 103,544

T 0 all whom it may concern: ,7

. Be it known that I, VVlLLIAM ELMER TUR- NER, a citizen of the United States, residing at Toppenish, in the county of Yakima and have invented certain new and useful Improvements in Valve Grinders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable i 10 others skilled in' the art to which it app tains to make and use the same.

My invention relates to new and useful improvements in valve grinders and more particularly to that class wherein cage valves object is to provide a chuck for gripping the stem of the valve and supporting the valve and the cage thereon- A further object is to provide means for imparting a reciprocating rotary movement 20 to said chuck.

A further object is to provide means for intermittently reversing the rotation of the chuck whereby the cage will be caused to rotate independently of the valve and chuck.

adjusting means for parts of the grinding device.

Other objects and advantages will be hereinafter set forth and more particularly pointed out in the accompanying specification. V In the accompanying drawings which are made a part of this application,

Figure 1 is a side elevation of the grinder showing a valve and cage in operative rela-.

tion therewith, a part of the cage and valve being broken away. 7

Big fins a top plan view of the grinding device, and

Q Fig. 3 is a detail elevation of the idlers employed for guiding the driving belt of the grinder.

Referring to the drawings in which' similar reference numerals designate correspond- I ing parts throughout the several views,

1 indicates a standard having at one end a supporting base 2 by means of whichthe standard may be readily secured to any suitable form of support, such the like.

Attached to the upper portion of the standard is a bracket 3, which is adjustably mounted on the standard 1 and held in its adjusted position by means of a set screw bracket having a pair of arms 5 through which is rotatably mounteda shaft Specification of Letters Patent.

And a further object is to provide suitable v down pulley.

asa work bench, or bolt having a nut frame in fixed relation with the bracket, and

Patented Feb. 27, 1917.

The shaft 6 is to' be rotated v-alve8, the stem 9 of which is secured in the chuck 7, will be likewise rotated, while the valve cage 10, seated and resting upon said valve, will also be given a reciprocating rotary movement by the momentum of the valve 8 to-cause the cage 10 to move relatively to thevalve, thereby more truly grinding the seats 11 and 12, between the valve and valve cage respectively, this reciprocating rotary motion being imparted to the shaft 6 by attaching a lever 13 to the upper end of the shaft 6, said lever being pivotally attached to one end of a pitman 14 through the medium of a bolt 15, said lever having a plurality of openings 16, whereby the swinging movement of the lever may be increased or decreased. 1

The opposite end ofthe pitman 1 1 is attached to a wrist pin 17, carried by a pulley the pulley maybe increased or decreased as occasion may require.

Cooperating with the pulley 18 is a belt 19, which extends from the pulley 18: to a pulley 20, of a motor 21, said m'otor being'preferably of the electric type, although other forms of motor may be used, if desired, and in order to hold the belt in proper alinement with the pulleys 18 and 20,- the pulley 18 position, idler sheaves 22 are mounted upon being adjustablelongitudinally of the shaft, through the medium .of collars 25, thereby positioning the sheaves to correspond with the diameters of the various faces of the step The frame 24 is provided with an elongated slot 26 through which extends a bolt 27 carried by the bracket 3, said 28 thereon for locking the by providing the elongated slot, the frame and idler' sheaves may he moved upwardly and downwardly as desired.

In operation, a uantity of grinding substance or compoun is placed upon the valve resting in a horizontal position, while the pulley 20 rests in a vertical 6, having atits lower end any suitable form of chuck 7. alternatelyin reverse movement so that the being'of the step down variety or 1 .end of the shaft adapted to support a valve:

and valve seat Within the cage at the polnts where they are to be ground, and the stem of the valve then secured in thechuck 7. The motor is then started, which w ll result in rotating the pulley 18 in one d1rect1on, While the pitman 1e Wlll move the lever l3 backwardly and forwardly in the are of a circle, thus imparting a rocking motion to the shaft 6, rotating the valve 8 a predetermined distance in one direction and then reversing the rotation thereof for a predetermined distance in the opposite d1rection. As the cage 10 simply rests upon the valve 8 by its own weight in such manner that the seats of the cage and valve wlll register with'each other, the momentum imparted to the cage, by the first rotation of the shaft 6, will continue the rotation of the cage in the same direction, even When the IOthtlOh of the valve is reversed, thevehv setting up a relative movement a grinding action be tween the seats of the cage and valve.

in view of the fact that the valve'eaae i l v 1 tl'ttl tlltl elevvly in one direction then in the other. while the valve travels mpialyeh the opposite directions, the grinding operation may be quickly performed and the seats will be ground perfectly true so. as to pr op erly hold compression. It will likewise be seen that in view of the rapidity at which the valves may be ground, a greater number of valves may be ground at a minimum expense and in a minimum space of time.

I claim 3 1. A valve grinder com prising a vertically disposed shaft, a chuck c arried by the lower and a valve cage seated loosely uponfthe valve, means arranged above the shaft to 'impart a rotary reciproc'atlng -1novemen' t "to Copies of this patent may be obtained for five cents ed to guidethe belt on to said end of said shaft, and means to swing sald 53 lever back and forth whereby theshaft and valve will be oscillated and the cage thereby caused to move relatively to the valve.

8. In a valve grinder, the comblnation I a l) with a shaft, and means to attach a valve and cage to said shaft, of a lever attached to said shaft, a pitman admstably attached at one end to said lever, a stepped pulley, a Wrist pin on said pulley to which the opposite end of said pitman is attached, and have tevetate eanl pulley whereby the let er will he eivnnghaeh and forth in tt l6 tl-l't of a circle and the shalt and valve attached.

thereto nanhntail and the eagle gauged ta oscillate relative to the valve.

4-; In a valve grinding device, a standard, a bracket adjustably mounted upon said 'standardf a'valve carrying shaft mounted in said bracket," a stepped pulley carried by said bracket, a pitman attached to; said pulley, a lever attached to said shaft,'means to 'ad-justably secure the pitman to the lever, a driving belt cooperating with said pulley, and adjustably mounted idler sheaves adaptpulley.

In testimony whereof I have signed my name to this specification in the presence of tivo subscribing witnesses.

I l VILLIAM. ELMER TURNER. YVitnesses: 1

each, by ad dressingthe Commissioner of Patents, 

